Approximate Hamiltonian for baryons in heavy-flavor QCDKamil Serafin, María Gómez-Rocha, Jai More and Stanisław D. GłazekEur. Phys. J. C, 78 11 (2018) 964DOI: https://doi.org/10.1140/epjc/s10052-018-6436-2